(a) Identify specimens L, N, and Q
Specimen L; Specimen N; Specimen Q;
(b) State three agricultural uses of each specimen N and Q
(c) List two crops each which require each of the specimens L, N and Q in large quantities for good yields
(d) State three methods of applying specimen L on a farm
Explanation
(a) ldentification of Specimens;
- L - urea,
- N - lime / quicklime / slaked lime,
- Q - wood ash.
(b) Agricultural uses of specimen N (Lime):
- Lime is used in the soil to correct soil acidity.
- It helps to supply calcium for root development.
- It can be used to lime fish ponds to correct water acidity.
- It can be used in improving clay soil structure.
- It brings about flocculation of fine clay particles in fish ponds as well as reducing turbidity of ponds.
- It improves the growth of soil microbes and also renders more available the nutrients locked in clay soils.
Agricultural uses of specimen a (Wood ash)
- is used for correcting soil acidity.
- It is also a good natural pesticide for controlling insect pests of seedlings and vegetables;
- it provides potassium for plant growth and a good component of compost; lime increases grown of phytoplankton in fish ponds and can be used to correct acidity in fish ponds.
(c) Crops that requires Specimen L (Urea) are as follows:
- Maize;
- Millet;
- Rice;
- Guinea corn;
- Wheat:
- Leafy vegetables.
Crops that requires Specimen N
- groundnut:
- pigeon peas;
- cowpea,
- soyabeans;
- bambará groundnut.
Crops that requires Specimen Q (Wood ash) are as follows:
- cassava,
- cocoyams
- sweet potato;
- Irish potato;
- yams;
- carrots.
Methods of applying specimen L(Urea) to the soil are as follows:-
- Urea can be applied through ploughing into the soil using a plough, and it can be done through drilling into the soil using a plough.
- Ring method and covering can be used as a way of applying urea to the soil;
- Also, side dressing and covering methods can also be used.;
- Broadcast method can equally be applied.